Taxonomic Results of the BRYOTROP Expedition to Zaire and Rwanda 8. Riccia vulcanicola E. Fischer (subgenus Ricciella, Sectio Cavernosae), a new species from the Virunga Volcanoes, Rwanda

Abstract

A new Riccia species, R. vulcanicola is described and illustrated. It is closely related to R. crystallina, differing by the incomplete rosettes of the thallus and the larger and fewer areolae of the spores.